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I have been told that riding a bicycle can cause clots, is riding a motorcycle OK? What is the best exercise to do? Thanks for your help.

Answer:

I do not know of any reports of people developing DVT after "casual" cycling. I have read reports of competitive cyclists who have developed DVT after intense riding over many hours. These clots are usually thought to occur when a cyclist gets dehydrated. When we are dehydrated, our blood "thickens" and clots more easily. Sometimes when a cyclist develops a blood clot after a particularly strenuous ride, it is also in the setting of a flight home after a competition. This period of inactivity on a flight (sometimes called "Economy Class Syndrome") in the setting of dehydration after a cycling competition is thought to cause the DVT.